For more than 40
years Pentangle has been the United Kingdoms foremost wooden mechanical puzzle
producer.Made in Hampshire, England, all Pentangle puzzles are of
good quality in both their puzzling challenge and as geometric constructions.

Almost all Pentangle Puzzles DO NOT come with solutions. Pentangle explains it's policy like this:

Please Note: Almost all of our puzzles are supplied
without solutions. We feel that if a solution is sold with the product - the puzzler will
look, often without really trying to solve the problem first! We do however, offer a
solution service whereby the answers are available upon request.

The solution service is provided by Pentangle (in England)
not by Cleverwood. We do not have the solutions. If you must have the
solution for a Pentangle Puzzle you can ask Pentangle for it by email: sos@pentangle-puzzles.co.uk

So, while Pentangle Puzzles are for puzzle people age 9 - 99
they are not for people who require instant gratification. Patience is required to enjoy a
pentangle puzzle.

A mechanical puzzle is a self-contained object, composed
of one or more parts, which involves a problem for one person to solve by manipulation
using logic, reasoning, insight, luck, and/or dexterity. - Jerry Slocum